I need help plz I do not really understand this if you can help me I’d highly appreciate

Consider the expression below. 9 + 4(x + 2) – 3.1 select the term that best describes "3" in the given expression. o a. coefficient variable exponent constant

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Percent increase and decrease. original number: 45 new number: 18